#3558BB#3558BB

#3558BB is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.161 H 266.0°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#3558BB
RGB	rgb(53, 88, 187)
HSL	hsl(224, 56%, 47%)
HSV	hsv(224, 72%, 73%)
CMYK	cmyk(71.7%, 52.9%, 0%, 26.7%)
CIE-LAB	lab(40.12, 21.69, -55.94)
CIE-LCH	lch(40.12, 60.00, 291.19°)
OKLab	oklab(49.16% -0.0114 -0.1609)
OKLCH	oklch(49.16% 0.161 266)
XYZ	xyz(13.9244, 11.3227, 48.4557)
Luminance	0.1132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3558BB #BB9835

analogous

#359BBB #3558BB #5535BB

triadic

#3558BB #BB3558 #58BB35

tetradic

#3558BB #BB359B #BB9835 #35BB55

square

#3558BB #BB359B #BB9835 #35BB55

split-complementary

#3558BB #BB5535 #9BBB35

monochromatic

#1A2B5C #27428B #3558BB #5C7BD1 #8CA2DE

Accessibility & contrast

On white

6.43

#3558BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3558BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3558BB

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3558BB	#FFFFFF	#000000	##FFFFFF
##3558BB	1.00	6.43	3.26	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1365BE

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3558bb;
/* rgb */ color: rgb(53, 88, 187);
/* oklch */ color: oklch(49.2% 0.161 266.0);

Tailwind

colors: {
  custom: {
    50: '#7d86d0',
    500: '#3558bb',
    950: '#000000',
  },
}

SCSS

$custom: #3558bb;
$custom-light: #7d86d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3558bb",
  "rgb": {
    "r": 53,
    "g": 88,
    "b": 187
  },
  "hsl": {
    "h": 224.328,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.49162,
    "c": 0.16132,
    "h": 266
  },
  "luminance": 0.11324
}

Semantic roles & 50–950 ramp

primary

#3558BB

secondary

#C9B783

accent

#B849DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3558BB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →